$\frac{\tan A + \sec A - 1}{\tan A - \sec A + 1} = $

  • A
    $\frac{1 - \sin A}{\cos A}$
  • B
    $\frac{1 - \cos A}{\sin A}$
  • C
    $\frac{1 + \sin A}{\cos A}$
  • D
    $\frac{1 + \cos A}{\sin A}$

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જો $x$ અને $y$ લઘુકોણ હોય કે જેથી $\cos x + \cos y = \frac{3}{2}$ અને $\sin x + \sin y = \frac{3}{4}$ થાય,તો $\sin(x + y)$ ની કિંમત શોધો.

વિધાન $(A)$: જો $\sqrt{4 \sin^4 \theta + \sin^2 2\theta} + 4 \cos^2\left(\frac{\pi}{4} - \frac{\theta}{2}\right) = 2$ હોય,તો $\theta$ એ $3^{\text{rd}}$ ચરણ અથવા $4^{\text{th}}$ ચરણમાં આવેલું છે.
કારણ $(R)$: $\sqrt{\sin^2 \theta} = \sin \theta$

જો $\cos x+\cos y+\cos \alpha=0$ અને $\sin x+\sin y+\sin \alpha=0$ હોય,તો $\cot \left(\frac{x+y}{2}\right)$ ની કિંમત શોધો.

જો $\tan^2 \alpha \tan^2 \beta + \tan^2 \beta \tan^2 \gamma + \tan^2 \gamma \tan^2 \alpha + 2\tan^2 \alpha \tan^2 \beta \tan^2 \gamma = 1$ હોય,તો $\sin^2 \alpha + \sin^2 \beta + \sin^2 \gamma$ નું મૂલ્ય શોધો.

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જો $\tan A - \tan B = x$ અને $\cot A - \cot B = y$ હોય,તો $\cot (A - B) =$

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